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Strong Chinese "heart": Can advanced turbofan 19 drive FC-31 into carrier-based aircraft
The Frontier Post
March 3, 2020
The advanced aero engine is one of the important signs of the highest level of industrial manufacturing in the country, and is called "the pearl in the crown of industrial manufacturing". At present, only a few countries, such as China, the United States, Russia, Britain, and France, are able to independently design and manufacture advanced aviation, and only the United States and Russia have obvious advantages. China has been able to independently develop advanced aviation and apply it to our fighter aircraft, which has always been one of the biggest dreams of the Chinese people.
At present, according to international standards, the advanced “four generations of medium push” engines need to meet a thrust-to-weight ratio of more than 10 and an afterburning thrust of 11 tons, which can enable fighter aircraft to achieve ultra-maneuvering and super-cruising requirements. Looking at China, it seems that only turbofan-19 meets these requirements.
Speaking of, China's demand for medium-thrust turbofan engines was initially revealed by drones. Previously, China ’s large unmanned aerial vehicles generally used medium-thrust non-afterburning turbofan engines. At that time, China also introduced the RD-93 engine from Russia for the Phenom fighter. Not suitable for drones, so Guizhou Liyang, one of China ’s aviation development research units, started to develop engines with self-produced Xiaolong fighters based on the RD-93. Turbofan-13 "Taishan" engine.
RD-93 Engine
Li Yang's research and development base is relatively weak, so it decided to invite experienced Jiangyou 624 to develop together. After the turbofan-13 was developed, it was first used on the Dragon, and the non-boosted model was used on the sharp sword drone. It is known that in addition to the dragon and sword, Turbofan-13 was also equipped on Shen Fei's J-31. Like the Dragon, the F-31 used the Russian RD-93 engine.
However, even the improved turbofan-13 has a maximum thrust-to-weight ratio of only 9 and a thrust of only 10 tons, which makes the fighter's combat radius not large enough. This is also considered by many people that the J-31 cannot become the next generation of shipborne Machine reason.
FC-31 at the Paris Air Show 2019
Of course, Shen Fei will not let the J-31 stop at the turbofan-13. Previously, it was reported that 624 with turbofan-13 project successful experience and turbofan-15 engine core machine, designed a new type of powerful Chinese "heart" turbofan in a very short time. -19 "Huangshan". According to data, the turbofan-19 has a thrust-to-weight ratio of 11 and a thrust of more than 11 tons, which meets the requirements of "four generations of thrust". So can this "advanced medium push" turbofan 19 promote the J-31 to become a carrier-based aircraft?
J-31 Prototype
At present, the improved F-135 engine of the US F-35 single-engine fighter has a thrust of 21 tons, and the maximum take-off weight of the fighter is 33 tons. If the J-31 twin-engine fighter is equipped with two turbofans -19, its thrust is expected to exceed F-35, the take-off weight of the fighter can reach at least 35 tons. At this time, the combat radius of the J-31 can reach more than 1,200 kilometers, which is enough to ensure the advantages of our aircraft carriers.
P&W F135 Engine
However, some analysts believe that Turbofan-19 still has some way to go to form the combat power for the J-31. Considering that the current Dragon platform is more mature than the J-31, it is very likely that Turbofan-19 will first go to Dragon for verification. In addition, some people think that the J-20 can become the next generation of carrier-based aircraft. However, the J-20 is not designed for the Navy. To convert to a carrier-based aircraft requires extensive changes, which is a huge project. However, no matter where China's next-generation carrier-based aircraft is spent, the step-by-step development of domestic engines such as turbofan-19 is indispensable.
https://mil.news.sina.com.cn/jssd/2020-03-03/doc-iimxyqvz7379045.shtml
Foreign media said that China's FC31 war opportunities cannot be sold
March 8, 2020
Recently, the FC31 (J31 aircraft) has begun to test again. Although this aircraft is advanced enough, it has not been favored by the Chinese military and the international market, so far there are only 2 verification aircraft, compared to the 9 of the J-20. There is a big gap between the verification aircraft and the 12 low-volume production models. Ping Kefu, editor-in-chief of the Canadian "Hanhe Defense Review" magazine, even declared that "China's FC-31 aircraft cannot be sold." Recently, Pakistan announced that it will jointly develop a fifth-generation aircraft with Turkey. In fact, it can be seen that Pakistan Air Force is not ready to introduce the F31 fighter. Military experts told reporters that there are many reasons why the FC-31 fighter is so embarrassing. The main reason is of course that China already has the J-20, but the secondary reasons are diverse. In addition to market reasons, the FC31 itself also exists. Many problems, if not solved, this aircraft will be difficult to be used in the Chinese military, it is even more difficult to export to other countries.
First of all, the most important problem is the engine problem. The Chinese Air Force does not have a suitable advanced 4th generation mid-thrust engine. The most advanced turbofan 13E has only 9500 kg of thrust, which is only 45% of the F135 engine on the F35 fighter. And the thrust-to-weight ratio is only about 8. Although the two engines can provide 19 tons of thrust, the total weight is about 2300 kg, while the F135 has a weight of less than 1700 kg. This 600 kg is basically equivalent to the air-optimized mode. Carrying capacity. If the FC31 uses two turbofans 13E, not only will it not be able to achieve supersonic cruise, but its air combat capability will also be greatly affected. Even its performance is not as good as the F35 fighter, and it will not be a fifth-generation fighter in the true sense. Unless China can increase the thrust of the turbofan 13E to about 12 tons, then the two engines can provide about 24 tons of thrust for the FC31, which is enough for the FC31 to achieve sufficient flight performance.
The second is demand. The Chinese Air Force already has advanced F-20 fighters and has opened four production lines in the Chengfei Group. It is likely that the annual output can reach 2-3 regiments, and it can be equipped with more than 500 in less than 10 years. The Chinese Navy can completely transform the F-20 fighters onto the ship. Even if some FC31 fighters are needed, in the next 10 years or even 20 years, the Chinese Navy can only have a maximum of 5-6 aircraft carriers and a maximum of about 300 fighters. This number is not many. Unless FC31 is able to export on a large scale, the price of FC31 will inevitably be unacceptably high, which may well exceed US $ 85 million. Now the export of FC31 can only confirm that Pakistan will buy 2 ~ 3 brigades48 ~ 72 fighters, but China's export price to Pakistan has always been very conscience, and the price of the FC1 "Dragon" is only 20 million US dollars. It is impossible to rely on exports to reduce costs.
The last is the speed of equipment. The US F35 has begun full production in six countries, and the annual production volume is more than 200. This is mainly because most of the US allies are industrial countries and have the strength of self-produced fighters. However, China does not have a good ally of the industrial countries. The only one that has the capability to produce its own aircraft is Pakistan. Even if China produces at full capacity, it is not possible to impact the global market by the same amount as the United States. In this case, China can only at most Build a batch of FC31s for your country and Pakistani army. In addition, maybe some local tyrants in the Middle East will come to buy a few.
In summary, although FC31 is not behind, it is still difficult to sell a good sales figure in the international market, but as one of the first generation of China's fifth-generation fighter, the significance of FC31 need not be questioned.
https://www.hotbak.net/key/中国FC31战机是否全面落后F35专家只说了四个字FC31新浪军事.html
@LKJ86 @beijingwalker @Beast
The Frontier Post
March 3, 2020
The advanced aero engine is one of the important signs of the highest level of industrial manufacturing in the country, and is called "the pearl in the crown of industrial manufacturing". At present, only a few countries, such as China, the United States, Russia, Britain, and France, are able to independently design and manufacture advanced aviation, and only the United States and Russia have obvious advantages. China has been able to independently develop advanced aviation and apply it to our fighter aircraft, which has always been one of the biggest dreams of the Chinese people.
At present, according to international standards, the advanced “four generations of medium push” engines need to meet a thrust-to-weight ratio of more than 10 and an afterburning thrust of 11 tons, which can enable fighter aircraft to achieve ultra-maneuvering and super-cruising requirements. Looking at China, it seems that only turbofan-19 meets these requirements.
Speaking of, China's demand for medium-thrust turbofan engines was initially revealed by drones. Previously, China ’s large unmanned aerial vehicles generally used medium-thrust non-afterburning turbofan engines. At that time, China also introduced the RD-93 engine from Russia for the Phenom fighter. Not suitable for drones, so Guizhou Liyang, one of China ’s aviation development research units, started to develop engines with self-produced Xiaolong fighters based on the RD-93. Turbofan-13 "Taishan" engine.
RD-93 Engine
Li Yang's research and development base is relatively weak, so it decided to invite experienced Jiangyou 624 to develop together. After the turbofan-13 was developed, it was first used on the Dragon, and the non-boosted model was used on the sharp sword drone. It is known that in addition to the dragon and sword, Turbofan-13 was also equipped on Shen Fei's J-31. Like the Dragon, the F-31 used the Russian RD-93 engine.
However, even the improved turbofan-13 has a maximum thrust-to-weight ratio of only 9 and a thrust of only 10 tons, which makes the fighter's combat radius not large enough. This is also considered by many people that the J-31 cannot become the next generation of shipborne Machine reason.
FC-31 at the Paris Air Show 2019
Of course, Shen Fei will not let the J-31 stop at the turbofan-13. Previously, it was reported that 624 with turbofan-13 project successful experience and turbofan-15 engine core machine, designed a new type of powerful Chinese "heart" turbofan in a very short time. -19 "Huangshan". According to data, the turbofan-19 has a thrust-to-weight ratio of 11 and a thrust of more than 11 tons, which meets the requirements of "four generations of thrust". So can this "advanced medium push" turbofan 19 promote the J-31 to become a carrier-based aircraft?
J-31 Prototype
At present, the improved F-135 engine of the US F-35 single-engine fighter has a thrust of 21 tons, and the maximum take-off weight of the fighter is 33 tons. If the J-31 twin-engine fighter is equipped with two turbofans -19, its thrust is expected to exceed F-35, the take-off weight of the fighter can reach at least 35 tons. At this time, the combat radius of the J-31 can reach more than 1,200 kilometers, which is enough to ensure the advantages of our aircraft carriers.
P&W F135 Engine
However, some analysts believe that Turbofan-19 still has some way to go to form the combat power for the J-31. Considering that the current Dragon platform is more mature than the J-31, it is very likely that Turbofan-19 will first go to Dragon for verification. In addition, some people think that the J-20 can become the next generation of carrier-based aircraft. However, the J-20 is not designed for the Navy. To convert to a carrier-based aircraft requires extensive changes, which is a huge project. However, no matter where China's next-generation carrier-based aircraft is spent, the step-by-step development of domestic engines such as turbofan-19 is indispensable.
https://mil.news.sina.com.cn/jssd/2020-03-03/doc-iimxyqvz7379045.shtml
------------------------------------------------
Foreign media said that China's FC31 war opportunities cannot be sold
March 8, 2020
Recently, the FC31 (J31 aircraft) has begun to test again. Although this aircraft is advanced enough, it has not been favored by the Chinese military and the international market, so far there are only 2 verification aircraft, compared to the 9 of the J-20. There is a big gap between the verification aircraft and the 12 low-volume production models. Ping Kefu, editor-in-chief of the Canadian "Hanhe Defense Review" magazine, even declared that "China's FC-31 aircraft cannot be sold." Recently, Pakistan announced that it will jointly develop a fifth-generation aircraft with Turkey. In fact, it can be seen that Pakistan Air Force is not ready to introduce the F31 fighter. Military experts told reporters that there are many reasons why the FC-31 fighter is so embarrassing. The main reason is of course that China already has the J-20, but the secondary reasons are diverse. In addition to market reasons, the FC31 itself also exists. Many problems, if not solved, this aircraft will be difficult to be used in the Chinese military, it is even more difficult to export to other countries.
First of all, the most important problem is the engine problem. The Chinese Air Force does not have a suitable advanced 4th generation mid-thrust engine. The most advanced turbofan 13E has only 9500 kg of thrust, which is only 45% of the F135 engine on the F35 fighter. And the thrust-to-weight ratio is only about 8. Although the two engines can provide 19 tons of thrust, the total weight is about 2300 kg, while the F135 has a weight of less than 1700 kg. This 600 kg is basically equivalent to the air-optimized mode. Carrying capacity. If the FC31 uses two turbofans 13E, not only will it not be able to achieve supersonic cruise, but its air combat capability will also be greatly affected. Even its performance is not as good as the F35 fighter, and it will not be a fifth-generation fighter in the true sense. Unless China can increase the thrust of the turbofan 13E to about 12 tons, then the two engines can provide about 24 tons of thrust for the FC31, which is enough for the FC31 to achieve sufficient flight performance.
The second is demand. The Chinese Air Force already has advanced F-20 fighters and has opened four production lines in the Chengfei Group. It is likely that the annual output can reach 2-3 regiments, and it can be equipped with more than 500 in less than 10 years. The Chinese Navy can completely transform the F-20 fighters onto the ship. Even if some FC31 fighters are needed, in the next 10 years or even 20 years, the Chinese Navy can only have a maximum of 5-6 aircraft carriers and a maximum of about 300 fighters. This number is not many. Unless FC31 is able to export on a large scale, the price of FC31 will inevitably be unacceptably high, which may well exceed US $ 85 million. Now the export of FC31 can only confirm that Pakistan will buy 2 ~ 3 brigades48 ~ 72 fighters, but China's export price to Pakistan has always been very conscience, and the price of the FC1 "Dragon" is only 20 million US dollars. It is impossible to rely on exports to reduce costs.
The last is the speed of equipment. The US F35 has begun full production in six countries, and the annual production volume is more than 200. This is mainly because most of the US allies are industrial countries and have the strength of self-produced fighters. However, China does not have a good ally of the industrial countries. The only one that has the capability to produce its own aircraft is Pakistan. Even if China produces at full capacity, it is not possible to impact the global market by the same amount as the United States. In this case, China can only at most Build a batch of FC31s for your country and Pakistani army. In addition, maybe some local tyrants in the Middle East will come to buy a few.
In summary, although FC31 is not behind, it is still difficult to sell a good sales figure in the international market, but as one of the first generation of China's fifth-generation fighter, the significance of FC31 need not be questioned.
https://www.hotbak.net/key/中国FC31战机是否全面落后F35专家只说了四个字FC31新浪军事.html
@LKJ86 @beijingwalker @Beast
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